Rollup of 9 pull requests

[Centril]

Successful merges:

• Prefer statx on linux if available #65094 (Prefer statx on linux if available)
• don't assume we can *always* find a return type hint in async fn #65235 (don't assume we can always find a return type hint in async fn)
• Fix suggestion to constrain trait for method to be found #65242 (Fix suggestion to constrain trait for method to be found)
• Try fix incorrect "explicit lifetime name needed" #65307 (Try fix incorrect "explicit lifetime name needed")
• Return false from needs_drop for all zero-sized arrays. #65389 (Return false from needs_drop for all zero-sized arrays.)
• Add troubleshooting section to PGO chapter in rustc book. #65402 (Add troubleshooting section to PGO chapter in rustc book.)
• Fix #64153 #65435 (Fix ThinLTO and -o compiler option can lead to duplicate object file inclusion in staticlib #64153)
• Organize never_type tests #65438 (Organize never_type tests)
• Implement AsRef<[T]> for List<T> #65444 (Implement AsRef<[T]> for List)

Failed merges:

r? @ghost

[Centril]

@bors r+ p=9 rollup=never

[bors]

📌 Commit 9ce03a6 has been approved by Centril

[bors]

⌛ Testing commit 9ce03a6 with merge 17e36d8c4ae1f540675630e89d697dfff9fcdb1b...

[rust-highfive]

The job dist-various-2 of your PR failed (pretty log, raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

2019-10-15T20:48:14.0158246Z [RUSTC-TIMING] backtrace test:false 0.527
2019-10-15T20:48:16.8733742Z error[E0308]: mismatched types
2019-10-15T20:48:16.8735408Z    --> src/libstd/sys/unix/fs.rs:151:38
2019-10-15T20:48:16.8736293Z     |
2019-10-15T20:48:16.8736963Z 151 |                 stat.st_atime_nsec = buf.stx_atime.tv_nsec as libc::c_long;
2019-10-15T20:48:16.8738226Z     |                                      |
2019-10-15T20:48:16.8738835Z     |                                      expected i64, found i32
2019-10-15T20:48:16.8738835Z     |                                      expected i64, found i32
2019-10-15T20:48:16.8740335Z     |                                      help: you can convert an `i32` to `i64`: `(buf.stx_atime.tv_nsec as libc::c_long).into()`
2019-10-15T20:48:16.8759519Z error[E0308]: mismatched types
2019-10-15T20:48:16.8760367Z    --> src/libstd/sys/unix/fs.rs:153:38
2019-10-15T20:48:16.8764606Z     |
2019-10-15T20:48:16.8764606Z     |
2019-10-15T20:48:16.8765401Z 153 |                 stat.st_mtime_nsec = buf.stx_mtime.tv_nsec as libc::c_long;
2019-10-15T20:48:16.8766626Z     |                                      |
2019-10-15T20:48:16.8767260Z     |                                      expected i64, found i32
2019-10-15T20:48:16.8767260Z     |                                      expected i64, found i32
2019-10-15T20:48:16.8767929Z     |                                      help: you can convert an `i32` to `i64`: `(buf.stx_mtime.tv_nsec as libc::c_long).into()`
2019-10-15T20:48:16.8777950Z error[E0308]: mismatched types
2019-10-15T20:48:16.8779791Z    --> src/libstd/sys/unix/fs.rs:155:38
2019-10-15T20:48:16.8781153Z     |
2019-10-15T20:48:16.8781153Z     |
2019-10-15T20:48:16.8782927Z 155 |                 stat.st_ctime_nsec = buf.stx_ctime.tv_nsec as libc::c_long;
2019-10-15T20:48:16.8786301Z     |                                      |
2019-10-15T20:48:16.8787918Z     |                                      expected i64, found i32
2019-10-15T20:48:16.8787918Z     |                                      expected i64, found i32
2019-10-15T20:48:16.8789726Z     |                                      help: you can convert an `i32` to `i64`: `(buf.stx_ctime.tv_nsec as libc::c_long).into()`
2019-10-15T20:48:16.9252462Z error[E0308]: mismatched types
2019-10-15T20:48:16.9254714Z    --> src/libstd/sys/unix/fs.rs:311:34
2019-10-15T20:48:16.9256413Z     |
2019-10-15T20:48:16.9256413Z     |
2019-10-15T20:48:16.9258092Z 311 |                         tv_nsec: ext.stx_btime.tv_nsec as libc::c_long,
2019-10-15T20:48:16.9260382Z     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected i64, found i32
2019-10-15T20:48:17.3127402Z error: aborting due to 4 previous errors
2019-10-15T20:48:17.3127537Z 
2019-10-15T20:48:17.3127911Z For more information about this error, try `rustc --explain E0308`.
2019-10-15T20:48:17.3815704Z [RUSTC-TIMING] std test:false 3.361
---
2019-10-15T20:48:17.3951184Z == clock drift check ==
2019-10-15T20:48:17.4001534Z   local time: Tue Oct 15 20:48:17 UTC 2019
2019-10-15T20:48:17.5444193Z   network time: Tue, 15 Oct 2019 20:48:17 GMT
2019-10-15T20:48:17.5445628Z == end clock drift check ==
2019-10-15T20:48:19.7576259Z ##[error]Bash exited with code '1'.
2019-10-15T20:48:19.7616879Z ##[section]Starting: Upload CPU usage statistics
2019-10-15T20:48:19.7625552Z ==============================================================================
2019-10-15T20:48:19.7625898Z Task         : Bash
2019-10-15T20:48:19.7625999Z Description  : Run a Bash script on macOS, Linux, or Windows

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[bors]

💔 Test failed - checks-azure